Improvement in wooden-block pavements



' a aste cu ALEX'ANDRE TRENAUNAY, FN L i NEAR PARIS, FRANCE.

Letters Patent No. 102,884, dated May 10, 18 70.

IMPROVEMENT IN. WOODEN-BLOCK PAVEMENTS.

1 v a I l The Schedule referred to hi these Letters Patent and piakingpart of the same To all whom it may concern":

Be it known that I, Armxkxnnn Tanniinxay, of

Neuilly-sur-Seine, near Paris, F1ance, have invented a new and usefulImprovement in \Vooden Pavement;

and I do hereby declare that the following is a full, clear, and exactdescription thereof, which will enable others skilled in the art to makeand use the same.

This invention relates to the manufacture and application of mineralizedwood blocks or slabs for paving purposes.

The invention comprises First, mineralizing' the wood paving-blocks.

Second, an improved concrete.

Third, an improved water-proof coating.

Fourth, an improved adhesive mastic.

Fifth, an improved'mineral glue, and

Sixth, an improved solid glue.

The paving-blocks are made of pine"; beech, or other suitable wood, andof suitable size. The blocks are cut a'crossgthe grain of the wood at anangle of about forty-five degrees. The blocks are then 'mineralized or.petrified in the manner hereinafter described, and, when they havebecome thereby solidified, I cover the lower half of each block with awater-proof coating,

which is covered with coarse sand. I am thereby enabled to fix thesewood blocks as readily as those made of stone, and, in -this condition,they may be transported from place to place.

I prepare the ground to be paved \viththc im proved blocks by levelingand rolling, and then applying a layer of compressed concrete, of abouttwo and a-half inches, for yards, stabling, or footways, and of aboutour inches for roads, according to the form to be given for the'same. Bymeans of this concrete, I prevent thedamp rising from the soil, and forma very 'firm foundation'for the paving This being done, I lay down theblocks in the following manner:

The blocks are placed in rows across'the part to be paved, leaving aspace of about three-eighths of an inch all around eachblock for anadhesive mastic to be introducedfornniting the blocks, or theymay belaid without mastic when used for paving courtyards and similarpurposes. i

' For paving streets or roads, the blocks are to be placed in aninclined position, in rows, across the street, with a'space of aboutthree-cight-hs of an inch between each block for the introduction of theadhesive'mastic or concrete before mentioned. In this mannera uniformsurface may be obtained, of suificient firmness foralll purposes. Inorder to obtain a firm footing for horses, and prevent slipping, theblocks I are beveled ofi on top. v

For sidewalks, thefplocks are cut at an angle of forty five degreesandare united in squares by means. of mineral glue, for-resisting heatand moisture.

The blocks or slabs used for paving the interior of a Hydrocarburet ofresin, part-s 40 Boiled linseed oil, containing litharge, parts. Purewood tar, parts Naphthaline, parts 10 Pulverized plumbago, parts 7 10Total parts 1-00 These materials are mixed together in an iron vessel,and then boiled. The blocks are then inserted in the liquid mass, andplaced upon an'uon grating about two inches above the bottom of thevessel, and, after being treated. for a sufficient length of time, theblocks becomemineralized, and are then removed and placed in a dryingapparatus for the purpose of hardening.

The concrete, before mentioned, is composed of Coarse river sand, partsLime from gas-works, part-s 20 Hydraulic lime, parts 10 Pnlverizedbrick, parts 1 10 Dried and pulverized clay, parts 15 'lotul parts r.

These products are placed in an ordinary mortar mixing apparatus, andground up, triturated, and

mixed together, after which the resulting compound of concrete isapplied on the ground in squares of about a yard at a time, and wellrammed and rolled,

so as to form a firm and impervious foundation.

The improved water-proofcoating, before mentioned, is composed oi'Goal-tar, parts 45 Resinous pitch, parts 7 1O Baked clay, parts 25Pulverized lime, parts. 5

Plumbago, parts. 5

Sand, parts l 10 Total parts 100 These materials are placed in an ironvessel, and boiled andstirred until perfectly homogeneous.

The improved adhesive mastic, before mentioned, is composed of i Pitchfrom peat, parts. 40 Yellow galipot, parts 15 Whiting, parts 25Pnlvcrized pumice-stone, part-s 10 Oxide of manganese, parts 10 Totalparts H) The compound is prepared the same as that last described.

The mineral glue, before mentioned, is

composed of-- Common brown pitch, parts 40 Yellow wax, parts 5 Stearine,parts .3 10 Linseed-oil, containing Litharge, parts l 15 Red oxide ofcopper, parts Common resin, parts Sulphuric acid, parts Total parts t100 Common glue, parts 4 5 White galipot, parts 10 These products areprepared the same as thosetlast described.

Having thus described my invention,

I claim as new and desire to secure by Letters Patent-- 1. Theherein-described mineralizing compound for hardening wood, substantiallyas s'et'forth. 2. The composition for compressed concrete, prepared inthe manner hereinbefore described, to be employed for forming a bed orbase for the paving-blocks, as set forth.

3. The herein-described improved water-proof coating for the lower partsof the wooden blocks, prepared as set forth.

'4. The herein-described compound fdr an adhesive mastic for making thejoints of the blocks'after placing them in position, as set forth.

5. The improved mineral glue for uniting the wooden blocks or slabs, asdescribed.

6. The improved solid glue, prepared as and for the purposes described.

A. TRENAUNAY. Witnesses:

DEMOS, A. Gums;

